<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>盒子模型</title>
		<style>
			#box{
				margin: 50px 50px 50px 50px;
				border: solid black 4px;
				padding: 20px 20px 20px 20px ;
				width: auto;
				color: aqua;
				background-color: coral;
			}
		</style>
	</head>
	<body>
		<div id="box1">
			<h1 id="box">我是盒子</h1>
		</div>
	</body>
</html>
